Erya has always been valued by people and listed as a Confucian classic, which has a great influence on later exegesis. Later exegetical books, some supplemented the content of Er Ya, some imitated its style, and were named after the word "Ya". Among them, Kong Fu's Xiao Er Ya is the earliest work to supplement Er Ya. Since then, Liu Han Xi's Ming Shi has appeared, which not only gives a simple explanation of the words, but also further discusses the etymology. Guangya by Wei is a rich collection of books, which makes up for the lack of exegesis of Erya. Works supplementing Erya in Song Dynasty include Erya by Lu Dian and Erya Yi by Luo Yuan. In the Ming Dynasty, Zhu Mou's Pian Ya only collected obscure words. Fang Yizhi's Tong Ya is characterized by its exploration of etymology. In Qing Dynasty, Wu Yuxi collected words with different shapes and sounds but the same meaning, and wrote Bieya. Shi Menglan collected overlapping words and wrote "Overlapping Ya". In a word, all the above "Ya" are dictionaries containing written language of ancient books.